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Table 6.26 2003 NSDUH CAI Audit Trail Timing Data: Youth Experiences Section
Age Category 12-17 18 +
Year of Interest 2001 2002 2003 2001 2002 2003
Sample Size 7,571 22,853 21,869 N/A N/A N/A
Summary Statistics (Minutes)
Mean (F) 10.1 10.1 9.7 N/A N/A N/A
Variance (σ 2 ) 14.3 12.0 284.7 N/A N/A N/A
Standard Deviation (σ) 3.8 3.5 16.9 N/A N/A N/A
Quartiles
Maximum 45.5 46.4 2,455.6 N/A N/A N/A
Q3 11.9 11.8 11.3 N/A N/A N/A
Median 9.6 9.7 9.2 N/A N/A N/A
Q1 7.6 7.8 7.4 N/A N/A N/A
Minimum 0.1 0.0 0.0 N/A N/A N/A
Range 45.5 46.4 2,455.6 N/A N/A N/A
Mode 7.7 10.3 8.6 N/A N/A N/A
Percentiles
99% 22.9 21.3 20.2 N/A N/A N/A
95% 16.6 16.0 15.2 N/A N/A N/A
90% 14.5 14.2 13.6 N/A N/A N/A
10% 6.1 6.4 6.0 N/A N/A N/A
5% 5.3 5.6 5.3 N/A N/A N/A
1% 3.4 3.8 3.5 N/A N/A N/A
Extremes
5 Highest Values (Highest) 45.5 46.4 2,455.6 N/A N/A N/A
41.2 44.5 60.6 N/A N/A N/A
40.3 41.4 50.8 N/A N/A N/A
39.3 40.2 41.1 N/A N/A N/A
39.0 37.7 39.1 N/A N/A N/A
5 Lowest Values 0.4 0.1 0.0 N/A N/A N/A
0.3 0.0 0.0 N/A N/A N/A
0.3 0.0 0.0 N/A N/A N/A
0.2 0.0 0.0 N/A N/A N/A
(Lowest) 0.1 0.0 0.0 N/A N/A N/A
Note: Time recording begins at LEADSEN and stops recording after YE44 in the Youth Experiences Module.
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